/*
 * Copyright 2018 peipeihh
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * limitations under the License.
 */
package com.pphh.demo.cron;

import com.pphh.demo.job.HelloJob;
import org.quartz.*;
import org.quartz.impl.StdSchedulerFactory;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import java.util.Date;

/**
 * a cron scheduler
 *
 * @author huangyinhuang
 * @date 6/5/2018
 */
public class CronScheduler {

    private static Logger log = LoggerFactory.getLogger(CronScheduler.class);

    public static void main(String[] args) throws SchedulerException, InterruptedException {
        CronScheduler cronScheduler = new CronScheduler();
        cronScheduler.run();
    }

    public void run() throws SchedulerException, InterruptedException {
        JobDetail job = JobBuilder.newJob(HelloJob.class)
                .withIdentity("MyJob", "MyGroup")
                .build();

        // a cron scheduler at every 10 seconds
        CronTrigger trigger = TriggerBuilder.newTrigger()
                .withIdentity("MyTrigger", "MyGroup")
                .startAt(DateBuilder.evenMinuteDate(new Date()))
                .endAt(new Date(System.currentTimeMillis() + 60 * 1000))
                .withSchedule(CronScheduleBuilder.cronSchedule("0/10 * * * * ?"))
                .build();

        log.info("start the scheduler.");
        SchedulerFactory factory = new StdSchedulerFactory();
        Scheduler scheduler = factory.getScheduler();
        scheduler.scheduleJob(job, trigger);
        scheduler.start();

        log.info("sleeping for scheduler to run job.");
        Thread.sleep(120 * 1000L);

        log.info("shutdown the scheduler gracefully.");
        scheduler.shutdown(true);
        log.info("the end.");
    }

}
